xscreensaver: add xscreensaver-elogind subpackage

Closes: https://github.com/void-linux/void-packages/issues/36208

srcpkgs/xscreensaver-elogind

@@ -0,0 +1 @@
+xscreensaver

srcpkgs/xscreensaver/template

@@ -1,7 +1,7 @@
 # Template file for 'xscreensaver'
 pkgname=xscreensaver
 version=6.04
-revision=2
+revision=3
 build_style=gnu-configure
 configure_args="--with-pam --with-login-manager
  --includedir=${XBPS_CROSS_BASE}/include
@@ -9,7 +9,7 @@ configure_args="--with-pam --with-login-manager
 conf_files="/etc/pam.d/xscreensaver"
 hostmakedepends="bc intltool pkg-config"
 makedepends="glu-devel libXi-devel libXinerama-devel libXmu-devel libXpm-devel
- libXrandr-devel libglade-devel pam-devel gdk-pixbuf-xlib-devel"
+ libXrandr-devel libglade-devel pam-devel gdk-pixbuf-xlib-devel elogind-devel"
 depends="perl perl-LWP"
 short_desc="Screen saver and locker for the X Window System"
 maintainer="Leah Neukirchen <leah@vuxu.org>"
@@ -35,3 +35,11 @@ do_install() {
 	sed '/^$/q' < driver/xscreensaver.c > LICENSE
 	vlicense LICENSE
 }
+
+xscreensaver-elogind_package() {
+	depends="${sourcepkg}>=${version}_${revision}"
+	short_desc+=" - elogind support"
+	pkg_install() {
+		vmove usr/libexec/xscreensaver/xscreensaver-systemd
+	}
+}